Alright, I was waiting for ep 77 of Naruto so I could get the explosion note from Naruto's Uncle and try to copy it for cosplay, I have enclosed the file at the bottom.

Also, in ep 31, Rock Lee save's a squirrel from getting blown up. Since the Chinchilla is basically puffball Squirrel and uber cute, too, I took some shots with him and the note. He looks very displeased <.<

What do you think of the note, if I made them into stickers on sticker paper in a printer, wouldn't they be nice accessories if you didn't have a kunai handy, besides a scroll.

That is... quite possibly one of the funniest things I've seen in awhile. It looks good, man! Though you might want to go over the existing line art with a brushed application of black ink just to give it the more... Painted feel of an ofuda. ^^

it's actually not a symbol but it's the actual character in Japanese/Chinese that means "explode".

In Chinese/Japanese calligraphy one of the most important aspects is the "proportion". In this case, the left part of the character you did pretty well on, but on the right part the proportion is off. The top "box" part in proportion to the bottom portion should be in a 1:2 ratio, that is, the box should take up only 1/3rd of the space on the right side.

The short straight line at the very bottom should be twice as long as what you have there, and yes what LadyRayne said is also true, you missed out on two of the downward angular strokes that should be there. (Sorry, chinese person speaking here, we were drilled this since BIRTH pretty much so now we can spot all the mistakes that others tend to make =P)

Finally because of the angle of that screenshot of Yashamaru the exploding notes seems horizontally stretched, but they should actually be squarish or more longer vertically than horizontally.

Hmm....here's a picture of the actual character you were copying =)

putting them on sticker paper was a cute idea, though....you should go around and stick them on random trees and places XD